SHIMANO ULTEGRA FC-R8100 12-SPEED CRANK 50/34T exclude_premium_shipping The Type-3 ROLLER BEARING CLUTCH™

The Type-3 ROLLER BEARING CLUTCH™ provides quiet

Designed to fit 160mm disc rotors without adapters

Boost 110mm & 148mm option built with Boost specific hub

Recommended brake rotor: SM-RT54

Optimum length

SHIMANO ULTEGRA FC-R8100 12-SPEED CRANK 50/34T exclude_premium_shipping The Type-3 ROLLER BEARING CLUTCH™Great speed means great responsibility. That's why, faced with the task of making the new ULTEGRA groupset even faster, Shimano decided to take a holistic and 100% performance focused approach. Shimano's new 12 speed road groupset delivers unparalleled control and comfort anytime, anywhere whether you're competing in an amateur race, chasing your personal best, or out for a social ride. That is "Science of Speed". And it's what sets SHIMANO apart from